Kahana Bay (Kahana Coast)

Kahana Bay is an exposed beach/point-break on O‘ahu’s windward side where surf can be unpredictable and not strongly seasonal. Surfing is generally best only when swell direction and angle wrap into the bay correctly, which can make waves feel inconsistent even when ocean conditions look promising. Safety is a major consideration here. The shoreline area can include rocks and shallow reef, and the water can become murky after heavy rain because runoff enters from the Kahana Stream. In addition, rip currents can occur near points and the stream mouth during higher surf. There is no lifeguard on site, so plan conservative entry/exit and avoid going in soon after rainfall (a waiting period of 48–72 hours is recommended due to runoff and bacterial risks). Wind is typically dominated by northeast trade winds, which are often onshore at this location and can affect surf cleanliness. Winds are generally reliable, with the most favorable months running from May through September. Wind shadows and turbulence can also occur around the bay due to surrounding high mountains. Practical logistics: parking is typically in a free dirt lot near the beach; if it’s full, access may route through a secondary lot near the boat ramp. Expect uneven pavement/potholes in the secondary lot and use caution when driving. Break-ins are reported as common on O‘ahu—avoid leaving any valuables in your car.